Improvement in sewing-machines



itinih iaia WILLIAM SIDENBERG, orNEW YORK, N. Y.

Lee-ers Patent No. 112,745, dated March 14, 1871.

IMPROVEMENT IN SEWING-MACHINES.

The Schedule referred to Ln these Letters Patent and making part of the lame.

To all whoml it mag/concern:

Be it known that I,.W1LLIAM SIDENBERG, of the city, county, and State of New York, have invented certain new and useful Improvements in Sewing- Machines, of which the following is a specification.

The nature of my invention consists in the arrangement,with the presser-arm of a sewing-machine, of an adjustable and removable arm for guiding and holding a vertical needle-bar operated from a vibrating arm, the whole constructed substantially as here'- inafter set forth.

lTo illustrate my invention, I have represented-so much of a sewing-machine in common use which does not employ any mechanism whatever to control or govern the upper or needle-thread, and applied my invention thereto.

Figure l is a side elevation of a sewing-machine in general use, to'which I have attached -my improve ments.

Figure 2 is a front elevation of the same.

Like letters 'indicate similar parts in all the figures.

A in the accompanying. drawing .represents -the frame of a sewingfmachine,which4 receives and supports the mechanism composing the working parts of the machine.

- B-are uprights or standards, upon-which thctable C is secured, and upon which the material to be sewed is placedl D are similar vuprights, forming the fulcrum E of the vibrating bar F, for actuating or giving motion to the needle-bar G.

H represents the 'n'gd arm, to which is arranged theusnal yielding or spring"l foot I, for pressing the material being sewed down upon the table O, and upon the feed mechanism beneath the table, operating through a slot in the table. y I

The various parts of a sewing-machine employed to form the lower stitch, feed mechanism, &c., being no part of my invention, I shall omit a detailed description thereof here, confining myself' to such partslas are necessary only to illustrate my several devices and improvements.l

llo support and guide the needle-bar G, an adjustf able and removable garm, J, is secured to the rigid bar H, for holding the material being :servedv upon the table, by a thumb-screw, K.v Y

To the front, L, 'of this adjustable bar J is ltted the needle-bar G, so as to operate perpendicularly or at right angles to the table G, in order that a straight needle may be employed to carry the upper thread. To give motion to this needle-bar G, a reciprocating or sliding connecting-rod, m, is pivoted to the needlebar G at o, and moves back and forth in a corresponding recess formed in the front end of the vibrating arm F, as represented byv dotted lines in iig. l; thus, when a vibrating motion is given to the arm F, a perpendicular or up-and-down motion is imparted to the needle-bar G and needle-.n by means of this sliding connecting-rodv m.

Motion. is given tothe driving-arm F in the usual manner, and requires no detailed description here.

By tracing,;t he line r, representing the upper or needle-thread, it will be observed that itV passes direct from t'he spool s, through 'guidedoops u u, to the needle, no mechanism for governing thisthread being required.

This invention is intended to be applied particularly `tothe Wheeler & Wilson-class of' sewing-machines,

and may beapplied to curved needle-machines of other modes of construction.

I claim as my inventiony Thel combinatiom'with the presser-arm H, of the adjustable and removable arm J, for guiding the needle-bar, the latter being operated from the arm F, all substantially as described. v v

A WILLIAM SIDENBERG.

Witnesses:

GUsTAvUs SIDENBERG, HENRY SIDENBERG. 

